80 AMERICAN ENTOMOLOGY. 



pair slender, longer than the anteriors ; third pair longest, slen- 

 der, the tarsi elongated, terminated by a single long and slender 

 nail. 



Obs. This genus is closely allied to Tanypus, Chironomus, and 

 Ceratopogon, but it differs from them by the remarkable confor- 

 mation of the anterior and posterior feet. 



[This genus appears to be one of the numerous forms of Cera- 

 topogon. Mr. Winuertz in his excellent Monograph of this 

 genus (Linnaea Entomologia, 6,) did not subdivide it into new 

 genera, but among the forms he mentions several which are very 

 like Heteroymia. Some of them have one claw of the tarsi much 

 shorter than the other, approaching by this character Hetcromyia, 

 which according to Say has but one claw on the posterior tarsi. 

 It is strange that Say does not describe the antennae of the male. 

 — Sacken.] 



Heteromyia fasciata. — Spcdjic character. Wings hyaline, 

 trifasciate with dusky. 



Desc. Body testaceous : thorax with a black disk : wings with 

 three equidistant bands, the two exterior ones somewhat conflu- 

 ent : posterior thighs a little dilated towards the tip : abdomen 

 with a silvery sericeous reflection; % cylindrical, ? dilated 

 towards the tip. 



Variety a. Thorax entirely testaceous. 



Ohs. The manners and habits of this insect are unknown, 

 though it is of rather frequent occurrence. 



HIPPARCHIA. Plate XXXVI. 



Generic character. Antennae with a slender, somewhat fusci- 

 form, [fusiform ?] or trigonate-orbicular club ; palpi meeting above 

 the tongue, with the second joint very much compressed, and much 

 longer than the first ; anterior pair of feet shorter than the rest, and 

 often very hairy ; feet of the other legs with double nails ; hinder 

 wings somewhat orbiculate-triangulate, with the internal margin 

 excavated to receive the abdomen ; the middle cell closed behind, 

 from which part the nervures radiate ; the outer margin entire, 

 or with acute or obtuse indentations. (Leach) 



Ohs. We adopt the generic name from Fabricius. It is the 

 Maiiiola of Schrank, Safyrus of Latreille, and of course, Papilio 

 of Linn^. The genus is numerous in species, and the wings of 



